Casting box for narrow plates



A. H. CRUSE CASTING BOX FOR NARROW PLATES mum mm M, 1924.

A. H. CRUSE CASTING BOX FOR NARROW PLATES 2 Sheets-Shel. 2

Filed Dec. 19. 1921 Patented @ct. M, i924.

AMANDUS H. CRUSE, OF BROOKLYN, NEW YORK, ASSIGNOR TO B. HOE AND Gil, OF

NEW 'YOBK, N. Y., A CORPORATION OF NEW YORK.

CASTING BOX FOB NARROW PLATES.

Application filed Ilecember 19, 1921.

drical curved plates employed for printing in the margin space between or at one end of regular sized plates, such plates and their method of use being shown and described in the co-pending applications to Addison J. Gallien, Serial No. 498,196, filed Septemher 3, 1921, and Louis A. Eiclnnidt, Serial No. 519,042, filed December 1, 1921.

Diificulty has been experienced in casting these narrow plates, as they are too narrow to be within the range of the gauge adjustment of the ordinary vertical casting box, and if they were cast in the ordinary box,

the plate is at the bottom of the mold, mak-- ing the cast dii'licult and the gate being on the side requires a large excess of metal which has to be removed to finish the sideedge of the plate. Furthermore,in the ordinary casting box where regular sized plates are to be cast, the pour for making the cast has usually been effected while the box is in a vertical position, the weight of the metal being sutlicient to spread the metal through the mold and cast the plate. With these narrow plates, however, where the plates are to be semi-cylindrical, there is so little metal that with the pouring effected in the usual manner there is not enough head. or pressure of the metal to force the metal all around the mold before it is set with the result that imperfect plates will be produced. 1

It is the especial object of the present invention to produce a casting box of simple construction in which the mold is narrow, being formed of the desired width to cast these narrow plates, so that the sides or long edges of the plates may be beveled in the mold and only the narrow edge formed with the gate, the mold being formed with the mold chamber extending transversely of the Serial No. 523,274.

vertical axis of the box when in casting position. It is further object of the invention to produce a. casting box of this character in which the box is so constructed that it may be tipped for casting to cause the metal to flow under gravity throughout the curved portion of the box and produce a perfect semiecylindrical plate, the box then being tipped back to or beyond the usual vertical position for taking out the plate.

lVith these and other objects in View, the invention consists in certain novel parts, arrangements and combinations, which will be described in connection with the accompanying drawings forming a part of this specification, and the novel features will then be pointed out in the claims hereunto annexed.

In these drawings- Figure l is a side view of the improved small casting box with the mold partly open. Figure 2 is similar view showing the mold closed.

Figure 3 is a detail broken view showing the mold closed and locked.

Figure 4 is a plan view looking in the direction of the arrow 4 in Fig. 2. 1 Figure 5 is an end view partly broken away looking in the direction of the arrow 5 in Fig. 2.

Figure 6 is a broken plan view of a part of the mold taken at the line w% of Fig. 1. Figure 7 is a broken sectional view, the section being taken on line y g of Fig. 6.

Figure 8 is a detail plan view, the View being taken on the line ee of Fig. 1.

Referring now to these drawings, the box has been illustrated as capacitated to cast a narrow plate, such as indicated by the letter P in Fig. 7, which is of a width corresponding to the margin space such as usually left between two regular size printing plates, and the box includes a two-part mold having a fixed mold section 1 and a movable mold section 2, these mold sections having curved portions between which is formed a curved mold chamber for casting a semi-cylindrioal plate of the same curved length as the ordinary semi-cylindrical curved plate. In order that the two long or side edges of the plate may be beveled in the mold and the gate formed on the short edge, the mold sections are formed so as to produce a mold chamber curved in the direction of the long dimensions of the plate, and themold chamber is asshown formed to extend on both 65 mold member 1 to permit the removal of the sides of the center'of gravity of the'mold,

7 shown a semicylindrical plate.

so as to produce in the particular mold With the chambers so formed, due to the small amount of metal used in these narrow plates, it may happen that there will not be head enough to force the metal to the end of the casting chamber.

To overcome this diificulty of the lack of head due to the comparatively small quan- H tity of metal used in making these narrow plates and so that the metal will flow evenly throughout the mold chamber, means are preferably provided whereby the casting box may-be tipped for the casting operation so 'aslto' cause the metal under the influence of gravity, and head to flow throughout the entire length of the mold chamber and thus produce a perfect plate, the box being preferably tipped the other way after the cast so as to givejplenty of space for opening the trated in which the mold member 1 is provided at each end with flat portions marked 3, 4, and a central rounded portion marked 5, located between the flats. With this construction the casting box may be rockedon the rounded part 5 so that the box for the pouring operation'may be tipped tothe left,

as shown in the figures, and will then rest on the ground 5 and the flat 1. This will thus throw the center of gravity of the curved mold chamber down and the metal will run inand entirely fill the mold chamber, thus producing a perfect semi-cylindrical plate. After the cast the box may be rocked the other, way, that is, toward the right in the figures, whereupon it will rest on the round 5 and the fiat 3. This throws the end of the mold upwardly and thus gives a space sufficient for completely opening the mold chamber for the removal of the plate.

a Handles Gare provided on the mold mem-:.

her 1' for'conveniently grasping the box to tip it in either direction.

The mold members 1 and 2 form between them a curved mold chamber of suflicient depth to produce a plate of the regular thickness.

' closed by a bar 7 into which dovetail projections 8 on the gauges 9 and the sides of v the chamber are closed by the side gauges v9 having beveled inner edges 10 for produc-' T ing the required bevel on the long sides of the plate.

position by pins 11 carried on the mold mem- These side gauges are held in ber 1,these pins also acting to position the matrix '12 which is laid in the bottom of the mold chamber in the mold member 1.

The movable member 2 is pivotally mounted sothat it can be swung away from the The end of the mold chamber isplate. As shown, the end of the member 2 is provided with an arm 13 pivoted on a stud 1 1 secured in hubs 15 mounted on the mold member 1. This movable part 2 of the mold is arranged to be positively locked to the mold member 1 for the cast. While this may be effected in various ways, in the particular construction illustrated, the mold member 2 is provided at each side with a pair of arms 16 extending from hub 17 eccentrically mounted on stud 18 finding bearings therein. These arms are provided at their other ends with locking recesses 19, the walls of these recesses being preferably arranged angularly to each other. Co-operating with these recesses is a locking bar 20 having angular faces 21 adapted to enter in the recesses 19, before referred to, and hold the parts in locked position when the lockilng bar is rotated to the position shown in The means by which the bar is rocked to looking or unlocked position may be somewhat varied. In the particular construction illustrated, the locking bar is supported in hubs carried in projections 23 extending from the mold body 1, and by the rotation of this bar the arms 16 on each side of the box are simultaneously locked up; or freed.

A handle 24: is provided for operating the locking bar, this handle being fast on a hub 25 fast on the bar 20.

If desired springs 26 may be provided secured to the mold member 2 and to the locking arms for holding the arms in tight contact with the locking faces 21 of the locking bar 20. I A. handle 27 is or may be provided secured to the side of the mold section 2 by which this mold section may be readily moved away from the mold section 1 after the plate is cast.

With the construction described a very compact simple casting box of small dimensions has been provided for casting these narrow margin plates for which it is especially designed and one whichis manipulated so as to entirely fill the mold chamber with the small amount of metal used in these plates, and in which the gate is formed on the narrow edge of theplate and easily removable.

While the invention has been shown and described in its preferred form, it will be understood that certain changes and variations may be made in the specific construction of the box and the means for locking the two members of the box together, without departing from the invention.

What I claim is l. In a castingbox, the combination of a two-part mold, the mold members of which are shaped to form a narow semi-cylindrical mold chamber, a vertical pouring opening to the chamber, one of said mold members having a downwardly extending projection on which the box may be tipped so that the head of the poured metal is assisted by gravity to fill the mold, and means for locking the two mold parts together.

2. In a casting box, the combination of a two-part mold, the mold members of which are shaped to form a narrow curved mold chamber thev curve of which extends in the direction of the long dimension of the plate, one of said mold members having a projection on its bottom on which the mold may be tipped from one side to the other, and means for locking the two mold parts together.

8. In a casting box, the combination of two mold members pivo-tally connected together and forming between them a narrow curved mold chamber, the long edges of which are beveled, the curve of the chamber extending in the direction of the long dimension of the plate when in pouring position, a pouring opening at the top of the mold, one of the mold members having a downwardly extendin projection on which the box may be rocked in one direction for casting and in the other for removing the cast plate and means for locking the two mold arts together.

4. n a casting box, two mold members, on one of which the box is supported and a projection on the bottom of the latter member on which the box can be rocked in either direction. I

5. In a casting box, two mold members,

on one of which the box is supported, a projection on the latter member on which the box can be rocked, in either direction, and a flat on each side of the projection, on which the box rests after it has been tipped.

6. In a casting box, the combination of a two-part mold, the mold members of which are shaped to form a narrow curved mold chamber, a pouring opening at one end of the chamber, a projection underneath one of the mold members on which the box can be rocked in either direction, a flat on each side of the projection and means for looking the two parts of the mold together.

7. In a casting box, two curved mold members'forming a casting chamber extending a substantial distance on opposite sides of the center of gravity of the box, the bottom of the box being provided with a downwardly extending projection on which the box can be rocked in either direction.

8. In a casting box, two curved mold members forming a casting chamber extending a substantial distance on opposite sides of the center of gravity of the box, the bottom of the box being provided with a downwardly extending projection on which the boxcan be rocked in either direction, and stops on each side of the downwardly extending projection.

In testimony whereof, I have hereunto set my hand.

AMANDUS H. CRUSE. 

